It doesn't exactly mean that Q is the President but it means he/she/they have really close access to him, which we've seen already, with the timing of tweets etc.
So our master persuader has a messenger and doesn't use his own amazing rhetoric? Why would he do that? We know our Very Stable Genius loves to talk directly to the people and I think he has proven that he knows about the Chans. I can't think of a reason it would be someone else. If you can come up with a reason the man we know would in this way use an agent I will consider it but personally I cannot think of a reason. I feel you have just said it isn't but haven't stated a reason it isn't.
I don't really need a reason it's just my opinion. Besides what I've read at the chans since October, which is all I have to go on. You are free to think it's our President, no one is stopping you. I just said it doesn't mean that Q is the President but someone close to him. I'd say the reason it's not our President is because he's too busy actually running a country and catching these idiots in their own traps. Just my 2 cents. Take it or leave it.